| 1 | Jimmy BRYAN | Dean Van Lines | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 3 | Jack McGRATH | Jack Hinkle | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 4 | Bill VUKOVICH | Lindsey Hopkins | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 5 | Jimmy REECE | Emmett Malloy | Pankratz | D | Offenhauser | L4 4.5 | Firestone |
| 6 | Bob SWEIKERT | John Zink | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 7 | Bob CHRISTIE | Dean Van Lines | Kuzma | Indy Roadster | Dodge | V8 | Firestone |
| 8 | Sam HANKS | Jones & Maley Cars | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 9 | Johnnie PARSONS | Ed Walsh | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 9 | Spider WEBB | Ed Walsh | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 10 | Tony BETTENHAUSEN | H.A. Chapman | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 10 | Paul RUSSO | H.A. Chapman | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 12 | Don FREELAND | Bob Estes | Phillips | ??? | Offenhauser | L4 4.5 | Firestone |
| 14 | Fred AGABASHIAN | Federal Engineering | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 15 | Jimmy DAVIES | Bardahl/Pat Clancy | Kurtis Kraft | 500B | Offenhauser | L4 4.5 | Firestone |
| 16 | Johnnie PARSONS | Trio Brass Foundry / Anderson | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 18 | Troy RUTTMAN | Novi Racing | Kurtis Kraft | ??? | Novi | L8 c 3.0 | Firestone |
| 19 | Andy LINDEN | Joseph Massaglia | Kurtis Kraft | 4000 | Offenhauser | L4 4.5 | Firestone |
| 21 | Paul RUSSO | Wolcott Fuel Injection | Kurtis Kraft | 500A | Offenhauser | L4 c 3.0 | Firestone |
| 22 | Cal NIDAY | D-A Lubricants Racing | Kurtis Kraft | 500B | Offenhauser | L4 4.5 | Firestone |
| 23 | Jerry HOYT | Jim Robbins | Stevens | ??? | Offenhauser | L4 4.5 | Firestone |
| 24 | Len DUNCAN | Ray Brady | Kurtis Kraft | 4000 | Offenhauser | L4 4.5 | Firestone |
| 25 | Ed ELISIAN | Lutes Truck Parts | Kurtis Kraft | 4000 | Offenhauser | L4 4.5 | Firestone |
| 27 | Rodger WARD | Aristo Blue/E.R. Casale | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 28 | Gene HARTLEY | Commercial Motor Freight | Ewing | D | Offenhauser | L4 4.5 | Firestone |
| 29 | Pat O'CONNOR | Ansted Rotary | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 31 | Keith ANDREWS | John McDaniel | Schroeder | ??? | Offenhauser | L4 4.5 | Firestone |
| 32 | Jiggs PETERS | Lee Glessner | Scopa | ??? | Offenhauser | L4 4.5 | Firestone |
| 33 | Jim RATHMANN | Belond Equa-Flow/Calif. Muffler | Epperly | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 36 | Tony BONADIES | Duke Donaldson | Kurtis Kraft | 3000 | Offenhauser | L4 4.5 | Firestone |
| 37 | Eddie RUSSO | Dr. R.N. Sabourin | Pawl | ??? | Offenhauser | L4 4.5 | Firestone |
| 39 | Johnny BOYD | Sumar/Chapman Root | Kurtis Kraft | 500D | Offenhauser | L4 4.5 | Firestone |
| 41 | Chuck WEYANT | Federal Engineering | Kurtis Kraft | 3000 | Offenhauser | L4 4.5 | Firestone |
| 42 | Al KELLER | Sam Traylor Offy | Kurtis Kraft | 2000 | Offenhauser | L4 4.5 | Firestone |
| 44 | Johnny THOMSON | Peter Schmidt | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 48 | Jimmy DAYWALT | Sumar/Chapman Root | Kurtis Kraft | ??? | Offenhauser | L4 4.5 | Firestone |
| 49 | Ray CRAWFORD | Ray Crawford | Kurtis Kraft | 500B | Offenhauser | L4 4.5 | Firestone |
| 61 | Russ KLAR | Ray Brady | Schroeder | ??? | Offenhauser | L4 4.5 | Firestone |
| 64 | Leroy WARRINER | Ansted Rotary | Kurtis Kraft | 500A | Offenhauser | L4 4.5 | Firestone |
| 68 | Ed ELISIAN | Westwood Gauge/Wales | Kurtis Kraft | 4000 | Offenhauser | L4 4.5 | Firestone |
| 69 | Ernie McCOY | LaVilla | Templeton | D | Offenhauser | L4 4.5 | Firestone |
| 71 | Al HERMAN | T.W. & W.T. Martin | Kurtis Kraft | ??? | Offenhauser | L4 4.5 | Firestone |
| 72 | Bill HOMEIER | Travelon Trailer / Ernest Ruiz | Kurtis Kraft | 500B | Offenhauser | L4 4.5 | Firestone |
| 73 | Len DUNCAN | McNamara/Lee Elkins | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 74 | Elmer GEORGE | Walmotor | Schroeder | ??? | Offenhauser | L4 4.5 | Firestone |
| 76 | Johnny KAY | Leitenberger | Silnes | ??? | Offenhauser | L4 4.5 | Firestone |
| 77 | Walt FAULKNER | Merz Engineering | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 77 | Bill HOMEIER | Merz Engineering | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 78 | George TICHENOR | Hopkins/Motor Racers | Lesovsky | ? | Offenhauser | L4 4.5 | Firestone |
| 81 | Shorty TEMPLEMAN | Central Excavating/Pete Salemi | Trevis | Indycar | Offenhauser | L4 4.5 | Firestone |
| 83 | Eddie JOHNSON | McNamara/Kalamazoo Sports | Trevis | Indycar | Offenhauser | L4 4.5 | Firestone |
| 88 | Manuel AYULO | Peter Schmidt | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |
| 89 | Pat FLAHERTY | Dunn Engineering | Kurtis Kraft | 500B | Offenhauser | L4 4.5 | Firestone |
| 93 | Danny KLADIS | Roy McKay | Kurtis Kraft | 3000 | Offenhauser | L4 4.5 | Firestone |
| 98 | Duane CARTER | J.C. Agajanian | Kuzma | Indy Roadster | Offenhauser | L4 4.5 | Firestone |
| 99 | Art CROSS | Bardahl/Ed Walsh | Kurtis Kraft | 500C | Offenhauser | L4 4.5 | Firestone |